Topic Thirteen: More Addition, Subtraction, and Length
Pacing (Duration of Unit):
Desired Results
Transfer: Standards for Mathematical Practices
1. Make sense of problems and persevere in solving them.
2. Reason abstractly and quantitatively.
3. Construct viable arguments and critique the reasoning of others.
4. Model with mathematics.
5. Use appropriate tools strategically.
6. Attend to precisions.
7. Look for and make use of structure.
8. Look for and express regularity in repeated reasoning.
Established Goals: 2.MD.5 Use addition and subtraction within 100 to solve word problems involving lengths that are given in the same units, e.g., by using drawings (such as drawings of rulers) and equations with a symbol for the unknown number to represent the problem.
Student I Can Statements
I can find the difference in length between two objects using standard units.
I can solve problems about measurement.
Big Ideas:
Measurement
Some attributes of objects are measurable and can be quantified using unit amounts.
Practices, Processes, and Proficiencies
Mathematics content and practices can be applied to solve problems.
Essential Questions:
How can you add and subtract lengths?
Students will know...
Measurements in the same unit can be added or subtracted in the same way as adding and subtracting whole numbers. The measurement unit needs to be written with the sum or difference.
Pictures and equations can be used to solve word problems involving measurements. Measurements can be added and subtracted in the same way as other whole numbers.
A sum can be represented as the total length of two line segments on a number line. A subtraction problem can be represented as the difference of two line segments on a number line
Good math thinkers know how to pick the right tools to solve math problems.
Vocabulary:
None
Students will be skilled at...
Solving problems by adding or subtracting length measurements
Add or subtract to solve problems about measurement
Add and subtract to solve measurement problems by using drawings and equations
Add and subtract on a number line
Choose the best tool to use to solve problems.
Assessment Evidence
Performance Assessment:
Other Evidence:
Learning Plan
Learning Activities:
13-1 Add and Subtract with Measurements
13-2 Find Unknown Measurements
13-3 Continue to Find Unknown Measurements
13-4 Add and Subtract on a Number Line
13-5 Math Practices and Problem Solving: Use Appropriate Tools
Topic Thirteen: More Addition, Subtraction, and Length
Pacing (Duration of Unit):Desired Results
Standards for Mathematical Practices
1. Make sense of problems and persevere in solving them.
2. Reason abstractly and quantitatively.
3. Construct viable arguments and critique the reasoning of others.
4. Model with mathematics.
5. Use appropriate tools strategically.
6. Attend to precisions.
7. Look for and make use of structure.
8. Look for and express regularity in repeated reasoning.
2.MD.5 Use addition and subtraction within 100 to solve word problems involving lengths that are given in the same units, e.g., by using drawings (such as drawings of rulers) and equations with a symbol for the unknown number to represent the problem.
Student I Can Statements
Measurement
Some attributes of objects are measurable and can be quantified using unit amounts.
Practices, Processes, and Proficiencies
Mathematics content and practices can be applied to solve problems.
Vocabulary:
None
Assessment Evidence
Learning Plan
13-1 Add and Subtract with Measurements
13-2 Find Unknown Measurements
13-3 Continue to Find Unknown Measurements
13-4 Add and Subtract on a Number Line
13-5 Math Practices and Problem Solving: Use Appropriate Tools